CN103613942A - High-viscosity thermo-stability asphalt and preparation method thereof - Google Patents
High-viscosity thermo-stability asphalt and preparation method thereof Download PDFInfo
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- CN103613942A CN103613942A CN201310674335.7A CN201310674335A CN103613942A CN 103613942 A CN103613942 A CN 103613942A CN 201310674335 A CN201310674335 A CN 201310674335A CN 103613942 A CN103613942 A CN 103613942A
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Abstract
The invention discloses high-viscosity thermo-stability asphalt, which is prepared from the following components in parts by weight: 100 parts of No.90 substrate asphalt, 15 to 22 parts of rubber material, 2 to 10 parts of thermoplastic elastomer material, 0.5 to 3 parts of inorganic acid, 0.5 to 4 parts of organic acid, 0.2 to 2 parts of comprehensive stabilizer and 0.2 to 4 parts of heat-resisting stabilizer. When the high-viscosity thermo-stability asphalt is stored at a high temperature of 180 DEG C, the rotation viscosity of the asphalt is not less than 2.0Pa.S in 72h, the asphalt can be stored in a longer time at a low temperature, the high-viscosity thermo-stability asphalt is good in duration and anti-aging property, excellent in cost performance and capable of satisfying the pavement with a waterproof function. Through the chemical reaction and the induced oxidation reduction reaction, the compatibility of the material and the asphalt substrate is improved, the molecular weight of the polymer is increased, the rubber material is adopted as a main component, the asphalt with high bond force and high stability is obtained, and in real application, the high-viscosity thermo-stability asphalt is matched with stone of the correspondent grade and can be used for paving an express way.
Description
Technical field
The present invention relates to thermally-stabilised pitch of a kind of high viscosity and preparation method thereof, belong to asphalt modification technical field.
Background technology
Asphaltum with high viscosity is suitable for paving of heavy traffic road surface and drainage road.In prior art, for improving the viscosity of pitch, often in pitch, add a large amount of properties-correcting agent, there is following defect: the asphaltum with high viscosity that adds a large amount of properties-correcting agent, on-the-spot viscosity can reach requirement at that time, but viscosity degradation is very fast under the state of high temperature storage, in common 12 hours, viscosity just can decline more than 30%, and, the pitch processing difficulties that viscosity is high, be not suitable for in-situ processing, if at plant mix, high temperature transports again, from produce to use poor if having time, after reaching the spot, testing of materials viscosity may be not up to standard, this is production process and the contradiction of transporting process.Therefore, seek a kind ofly can meet full-bodied demand, modifying asphalt that can meet again thermally-stabilised demand and preparation method thereof is urgent problem.
Summary of the invention
For above-mentioned prior art, in order to solve the high-temperature stability problem of modifying asphalt, the invention provides the thermally-stabilised pitch of a kind of high viscosity, the present invention is by introducing carboxyl at asphalt system, polymerization catalyzed auxiliary agent, and the technology of chemically crosslinked, make high-viscosity asphalt composing system stable, bonding force to building stones is large, can meet asphaltum with high viscosity use properties.The present invention also provides its preparation method.
The present invention is achieved by the following technical solutions:
The thermally-stabilised pitch of high viscosity is to be made by the component of following weight part:
100 parts of 90# matrix pitches, 15～22 parts of elastomeric materials, 2～10 parts of thermoplastic elastic materials, 0.5～3 part of mineral acid, 0.5～4 part of organic acid, 0.2～2 part of one package stabilizer, 0.2～4 part of heat-resisting stabilizing agent.
Described 90# matrix pitch is existing conventional products in prior art, and conventional purchase obtains from the market, do not repeat them here.
Described elastomeric material, be selected from natural rubber, styrene-butadiene rubber(SBR), isoprene-isobutylene rubber, rubber powder any or several arbitrarily, or be selected from the material (activation treatment of rubber item abrasive dust activation treatment, just refer to and in rubber powder, add certain auxiliary agent, then rubber powder is heated to certain temperature, under the booster action of stress, make rubber powder present activity certain and extraneous substance reaction; Activation treatment is existing routine techniques in prior art).
Described thermoplastic elastic material, be SBS (SBS) (be existing conventional products in prior art, conventional purchase obtains from the market), its S/B=30/70, number-average molecular weight is not less than 80,000.
Described mineral acid, is selected from any one or several in Thioctic Acid, sulfuric acid, phosphoric acid, nitric acid, sulfurous acid, hydrochloric acid, and the effect of mineral acid is: play and prevent from activating end group high temperature oxidation, play oxidation conversion effect, protection asphalt system.
Described organic acid, be selected from lauric acid, oleic acid, erucic acid, stearic acid, toxilic acid, acetic acid any or several arbitrarily, organic acid effect is: softened rubber, extended rubber and asphalt system.
Described one package stabilizer be selected from KH-550 silane coupling agent, 602 silane coupling agents, TAIC titanate coupling agent, Vulcanization accelerator TMTD, sulphur, rubber vulcanization accelerator DM, anti-aging agent RD, carbon black any or several arbitrarily, the effect of one package stabilizer is: impel the chemically crosslinked of asphalt system and modified system to generate.
Described heat-resisting stabilizing agent; be selected from dibutyl tin laurate, tin protochloride, long-chain secondary alcohol, lead salt series: any in three salt, disalt, lead stearate or several arbitrarily, the effect of heat-resisting stabilizing agent is: protection pitch component does not at high temperature occur sharply to degrade.
The preparation method of the thermally-stabilised pitch of described high viscosity, step is as follows:
Get 90# matrix pitch, being heated to 175～185 ℃ makes it melt (can add in the stirred autoclave with heating and heat-insulating device and heat), then add elastomeric material, thermoplastic elastic material, organic acid and mineral acid, stir and grow 25～35 minutes, 6000rpm shears 1 hour or (it is equivalent shearing with both effects of grinding with colloidal mill grinding, little experiment is that high-speed shearing machine is sheared, medium trial-production just can be used colloidal mill, colloidal mill is used in actual production), then add one package stabilizer, at 175～185 ℃, stir and grow 50～70 minutes, when rotary viscosity reaches 4 PaS, (initial viscosity of material may be in 8 PaS left and right to add heat-resisting stabilizing agent, if add too early heat-resisting stabilizing agent, the bad decline of viscosity, be unfavorable for processing), stir and grow 25～35 minutes, obtain the thermally-stabilised pitch of high viscosity.
The thermally-stabilised pitch of high viscosity of the present invention, in 180 ℃ of preservations of high temperature, within 72 hours, rotary viscosity is not less than 2.0PaS, and cryopreservation is more of a specified duration, has good durable ageing resistance, has excellent cost performance, can be used to meet the road surface that has water-proof function concurrently.
The present invention passes through chemical reaction, induced oxidation reduction reaction, increase the consistency of material and bitumen base, improve the molecular weight of polymkeric substance, adopt a large amount of waste Crumb rubbers to do main component, successfully obtained having the pitch of high cohesive force, high stability, while specifically applying, the building stones that coordinate corresponding grating, can be used for paving of motorway.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Example: the thermally-stabilised pitch of preparation high viscosity
Method for making:
1#: get 450 kilograms of 90# matrix pitches, 180 ℃ of thawings, add 3 kilograms of phosphoric acid, 6 kilograms of toxilic acids, 12 kilograms of 120 kilograms of common 30 order rubber powders and SBS, stirred after 30 minutes, 6000rpm shears 1 hour again, adds 2 kilograms of Vulcanization accelerator TMTDs, at 180 ℃, stirs and grows 60 minutes, survey rotary viscosity, when viscosity is to 4.0 time, if less than, shear a little, then add 4 kilogram of three salt (lead sulfate tribasic), stir and grow 20 minutes, obtain the thermally-stabilised pitch of high viscosity.Sample, surveys index, then, keeps 180 ℃ of temperature, continues to stir 72 hours, then tests three norms, rotary viscosity.
2#: be to add 9 grams of C 5 petroleum resins (adding) in 1# formula together with rubber powder, all the other are the same, the survey of falling sample three norms, rotary viscosity again.
The delta datas contrast of above-mentioned two groups of parallel experiment Long Time Thermal aging front and back viscosity and performances is as shown in table 1 (when in table, numerical value is 2 or 3, represent test repeatedly, its virtual value is averaged), in table 1,1# refers to index when the thermally-stabilised pitch of high viscosity has just prepared, and 1#-2 refers to that the thermally-stabilised pitch of 1# gained high viscosity is 180 ℃ of indexs of depositing after 72 hours.2#, 2#-2 are also same implications.
Table 1
| ? | 1# | 2# | 1#-2 | ?2#-2 |
| Softening temperature (° C) | 71? 71.5 | 72? 72 | 79? 79 | 72? 72 |
| 5 ° of C ductilities (mm) | 32.6? 33? 37.8 | 30.7? 34.8? 34.8 | 28.5? 29.2? 32.9 | ?26.5 26.3 27.2 |
| Penetration degree (0.1mm) | 74? 75? 73.6 | 72.3? 72.7? 73.4 | 65.3? 66.9? 67.1 | 63.2? 62.5? 63.0 |
| Rotary viscosity (Pa.S) | 4 | 4 | 2.8 | 2.7 |
| ? | ? | ? | 180 degree are deposited 72 hours | 180 degree are deposited 72 hours |
From table 1, two samples, through storing in 180 ℃ of high temperature airs, the viscosity of product still reaches requirement, and viscosity is higher than 2.0, and the decay of all other performances all, in the scope of license, reaches the requirement of expectation.
The thermally-stabilised pitch of embodiment 2 preparation high viscosity
Formula is:
90# matrix pitch double centner, 18 kilograms of natural rubbers, 6 kilograms of SBS, 2 kilograms of Thioctic Acids, 2 kilograms of oleic acid, 1 kilogram of KH-550 silane coupling agent, 2 kilograms of dibutyl tin laurates.
Preparation method is with embodiment 1.
The thermally-stabilised pitch of embodiment 3 preparation high viscosity
Formula is:
90# matrix pitch double centner, 15 kilograms, styrene-butadiene rubber(SBR), 10 kilograms of SBS, 0.5 kilogram of phosphoric acid, 4 kilograms of stearic acid, 602 0.2 kilogram of silane coupling agent, 4 kilograms of tin protochlorides.
Preparation method is with embodiment 1.
The thermally-stabilised pitch of embodiment 4 preparation high viscosity
Formula is:
90# matrix pitch double centner, 22 kilograms, styrene-butadiene rubber(SBR), 2 kilograms of SBS, 3 kilograms of phosphoric acid, 0.5 kilogram of acetic acid, 2 kilograms of TAIC titanate coupling agents, 0.2 kilogram of lead sulfate tribasic.
Preparation method is with embodiment 1.
The thermally-stabilised pitch of embodiment 5 preparation high viscosity
Formula is:
90# matrix pitch double centner, 20 kilograms of common rubber powders, 8 kilograms of SBS, phosphatase 11 kilogram, 3 kilograms of dodecanedioic acids, 0.8 kilogram of carbon black, 1 kilogram of lead stearate.
Preparation method is with embodiment 1.
Claims (8)
1. the thermally-stabilised pitch of high viscosity, it is characterized in that: be to be made by the component of following weight part: 100 parts of 90# matrix pitches, 15～22 parts of elastomeric materials, 2～10 parts of thermoplastic elastic materials, 0.5～3 part of mineral acid, 0.5～4 part of organic acid, 0.2～2 part of one package stabilizer, 0.2～4 part of heat-resisting stabilizing agent.
2. the thermally-stabilised pitch of high viscosity according to claim 1, it is characterized in that: described elastomeric material, be selected from natural rubber, styrene-butadiene rubber(SBR), isoprene-isobutylene rubber, rubber powder any or several arbitrarily, or be selected from the material of rubber item abrasive dust activation treatment.
3. the thermally-stabilised pitch of high viscosity according to claim 1, is characterized in that: described thermoplastic elastic material is SBS.
4. the thermally-stabilised pitch of high viscosity according to claim 1, is characterized in that: described mineral acid, is selected from any one or several in Thioctic Acid, sulfuric acid, phosphoric acid, nitric acid, sulfurous acid, hydrochloric acid.
5. the thermally-stabilised pitch of high viscosity according to claim 1, is characterized in that: described organic acid, be selected from lauric acid, oleic acid, erucic acid, stearic acid, toxilic acid, acetic acid any or several arbitrarily.
6. the thermally-stabilised pitch of high viscosity according to claim 1, is characterized in that: described one package stabilizer be selected from KH-550 silane coupling agent, 602 silane coupling agents, TAIC titanate coupling agent, Vulcanization accelerator TMTD, sulphur, rubber vulcanization accelerator DM, anti-aging agent RD, carbon black any or several arbitrarily.
7. the thermally-stabilised pitch of high viscosity according to claim 1, is characterized in that: described heat-resisting stabilizing agent, be selected from dibutyl tin laurate, tin protochloride, long-chain secondary alcohol, three lead salts, two lead salts, lead stearate any or several arbitrarily.
8. the preparation method of the thermally-stabilised pitch of high viscosity described in any one in claim 1～7, it is characterized in that: get 90# matrix pitch, be heated to 175～185 ℃ and make its thawing, then add elastomeric material, thermoplastic elastic material, organic acid and mineral acid, stir and grow 25～35 minutes, 6000rpm shears 1 hour or grinds with colloidal mill, then add one package stabilizer, at 175～185 ℃, stir and grow 50～70 minutes, when rotary viscosity reaches 4 PaS, add heat-resisting stabilizing agent, stir and grow 25～35 minutes, obtain the thermally-stabilised pitch of high viscosity.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103980723A (en) * | 2014-05-30 | 2014-08-13 | 福建省燕宁顺通科技发展有限责任公司 | Preparation method of stable rubber modified asphalt |
| CN105385177A (en) * | 2015-12-25 | 2016-03-09 | 苏交科集团股份有限公司 | Economical high-modulus bituminous mixture additive and preparation method thereof |
| CN105838093A (en) * | 2016-04-22 | 2016-08-10 | 河南普天交通科技有限公司 | SBS (styrene-butadiene-styrene) modified asphalt and preparation method thereof |
| CN106917336A (en) * | 2017-03-09 | 2017-07-04 | 浙江德林建设有限公司 | A kind of pavement structure |
| CN107022200A (en) * | 2017-05-08 | 2017-08-08 | 云南阳光道桥股份有限公司 | Modified pitch of Rut resistance and preparation method thereof under thermal extremes fully loaded transportation condition |
| WO2018148966A1 (en) * | 2017-02-20 | 2018-08-23 | 江苏宝利国际投资股份有限公司 | Sbr composite particle modified asphalt and preparation method thereof |
| CN111647276A (en) * | 2020-04-30 | 2020-09-11 | 深圳市卓宝科技股份有限公司 | Sizing material for asphalt-based waterproof system |
| CN111732893A (en) * | 2020-04-30 | 2020-10-02 | 深圳市卓宝科技股份有限公司 | Asphalt-based waterproof system for building top |
| CN113402983A (en) * | 2021-05-29 | 2021-09-17 | 山东哈力克新材料科技有限公司 | Color coating material for road and preparation method thereof |
| CN113429885A (en) * | 2021-05-29 | 2021-09-24 | 山东哈力克新材料科技有限公司 | Old asphalt pavement coating material and preparation method thereof |
| CN113429884A (en) * | 2021-05-29 | 2021-09-24 | 山东哈力克新材料科技有限公司 | Anti-freezing coating material for road and preparation method thereof |
| CN113462172A (en) * | 2021-05-14 | 2021-10-01 | 河海大学 | Performance improving method for SBS (styrene butadiene styrene) modified asphalt stored on site |
| CN113461367A (en) * | 2021-05-29 | 2021-10-01 | 山东哈力克新材料科技有限公司 | Anti-skid reconstruction construction method for asphalt pavement |
| CN113943491A (en) * | 2021-11-17 | 2022-01-18 | 东莞泰和沥青产品有限公司 | Low-temperature high-viscosity modified asphalt and processing technology thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980723A (en) * | 2014-05-30 | 2014-08-13 | 福建省燕宁顺通科技发展有限责任公司 | Preparation method of stable rubber modified asphalt |
| CN105385177A (en) * | 2015-12-25 | 2016-03-09 | 苏交科集团股份有限公司 | Economical high-modulus bituminous mixture additive and preparation method thereof |
| CN105838093A (en) * | 2016-04-22 | 2016-08-10 | 河南普天交通科技有限公司 | SBS (styrene-butadiene-styrene) modified asphalt and preparation method thereof |
| WO2018148966A1 (en) * | 2017-02-20 | 2018-08-23 | 江苏宝利国际投资股份有限公司 | Sbr composite particle modified asphalt and preparation method thereof |
| CN106917336A (en) * | 2017-03-09 | 2017-07-04 | 浙江德林建设有限公司 | A kind of pavement structure |
| CN107022200A (en) * | 2017-05-08 | 2017-08-08 | 云南阳光道桥股份有限公司 | Modified pitch of Rut resistance and preparation method thereof under thermal extremes fully loaded transportation condition |
| CN111647276A (en) * | 2020-04-30 | 2020-09-11 | 深圳市卓宝科技股份有限公司 | Sizing material for asphalt-based waterproof system |
| CN111732893A (en) * | 2020-04-30 | 2020-10-02 | 深圳市卓宝科技股份有限公司 | Asphalt-based waterproof system for building top |
| CN111732893B (en) * | 2020-04-30 | 2021-11-19 | 深圳市卓宝科技股份有限公司 | Asphalt-based waterproof system for building top |
| CN113462172A (en) * | 2021-05-14 | 2021-10-01 | 河海大学 | Performance improving method for SBS (styrene butadiene styrene) modified asphalt stored on site |
| CN113402983A (en) * | 2021-05-29 | 2021-09-17 | 山东哈力克新材料科技有限公司 | Color coating material for road and preparation method thereof |
| CN113429885A (en) * | 2021-05-29 | 2021-09-24 | 山东哈力克新材料科技有限公司 | Old asphalt pavement coating material and preparation method thereof |
| CN113429884A (en) * | 2021-05-29 | 2021-09-24 | 山东哈力克新材料科技有限公司 | Anti-freezing coating material for road and preparation method thereof |
| CN113461367A (en) * | 2021-05-29 | 2021-10-01 | 山东哈力克新材料科技有限公司 | Anti-skid reconstruction construction method for asphalt pavement |
| CN113943491A (en) * | 2021-11-17 | 2022-01-18 | 东莞泰和沥青产品有限公司 | Low-temperature high-viscosity modified asphalt and processing technology thereof |
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